English: We are the ones who gave our allegiance (Bay’at) to Muhammad to continue our Jihad. We will never fail forever”

Well, the exact slogan comes from the Muslim Brotherhood.They were inspired from Islam’s Battle of the Trench (Al-Khandaq) in 627 against the Qurayza Jews who were charged with treason they surrendered and all the men, apart from a few who converted to Islam were beheaded, while the women and children were enslaved.